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Old 09-23-2017, 03:35 PM
tuccillo tuccillo is offline
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I have watched my own retention pond with much interest. It appears to have a liner. It also has a weir. Before Irma, the water was 4 feet below the weir. I watched the water level rise during Irma, with much interest, until the water level reached the level of the weir and then it stops as water flowed into the weir and then into another retention pond that was significantly lower. All of the houses were above this level. Several days later, I noticed a contractor standing on the edge of the weir with long pole. He was apparently opening up a valve at the bottom of the weir which allowed water to flow into the other retention pond until we were back to pre-storm levels - about 4 feet below the level of the weir. The valve appears to be closed now. Needless to say, I am pretty impressed by the infrastructure to manage water during what was essentially a 100 year event.

Quote:
Originally Posted by kcrazorbackfan View Post
Probably because of the settlement on the bottom is several inches thick.......

Last edited by tuccillo; 09-23-2017 at 03:40 PM.